hamptonvictoria5 hamptonvictoria5 17-10-2022 Mathematics Answered Multiply the polynomials (5a² + 2a-7) and (3a²a + 1). Simplify the answer. Oa) 15a4-17a² +9a-7 Ob) 15a4-a³ - 18a² +9a - 7 Oc) 15a + a³ - 18a² +9a - 7 d) 8a² + a-6